Patent US3941938A successfully refreshed from Google Patents.
US3941938A
Expired / Lapsed
US
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Time shared TCMF and MF decoder
Assignee: 148074 HOLDINGS CANADA Ltd
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Filing: 1974-09-27
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Granted: 1976-03-02
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Expires: 1994-09-27
Abstract
Abstract A TCMF and MF decoder with common decoder section and separate TCMF and MF control sections. The decoder is time shared between two or more registers served on a first-come, first-served basis with priority assigned to one in case of identical seizure time. Strapping options are provided to allow the two registers to be both TCMF registers, or both MF registers, or one of each.
Inventors
- 👤 John A. Gauthier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:27
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
An improved decoder for a register and sender arrangement of a communication switching system, said arrangement comprising a plurality of registers and senders, a clock, TCMF and MF receivers, wherein TCMF, MF, and DP pulses are received by said receivers, and said TCMF and MF signals are transmitted to said decoder, said improved decoder comprising: Tcmf decoder control means; Mf decoder control means; common TCMF and MF decoder means for decoding both TCMF and MF signals; and time sharing control means coupled to said TCMF and said MF decoder control means; whereby said common TCMF and MF decoder means may be time shared by at least two MF or two TCMF registers or a TCMF register and an MF register.
Claim 2
Dependent Claim
120 words
An improved decoder for a register and sender arrangement of a communication switching system, said arrangement comprising a plurality of registers and senders, a clock, TCMF and MF receivers, wherein TCMF, MF, and DP pulses are received by said receivers, and said TCMF and MF signals are transmitted to said decoder, said improved decoder comprising: Tcmf decoder control means; Mf decoder control means; common TCMF and MF decoder means for decoding both TCMF and MF signals; and time sharing control means coupled to said TCMF and said MF decoder control means; whereby said common TCMF and MF decoder means may be time shared by at least two MF or two TCMF registers or a TCMF register and an MF register.
Claim 3
Dependent Claim
14 words
An improved decoder as claimed in claim 1 further comprising: Mf error indication means.
Claim 4
Dependent Claim
13 words
An improved decoder as claimed in claim 1 further comprising: register priority means.
Claim 5
Dependent Claim
59 words
An improved decoder as claimed in claim 1 further comprising: second TCMF decoder control means; second MF decoder control means; and second time sharing control means coupled to said TCMF and said MF decoder control means; whereby said common TCMF and MF decoder means may be time shared among at least four registers of any TCMF or MF combination.
Claim 6
Dependent Claim
13 words
An improved decoder as claimed in claim 4 further comprising: register priority means.
References Cited (Backward Citations)
US3671677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |